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Vulnerability · Published Oct 18, 2026 · Assigned by Linux

CVE-2026-98751tty: abort break signalling on hangup

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: tty: abort break signalling on hangup The break ioctls can race with hangup and end up calling into a tty driver for a device that is already gone or powered down. Drivers must handle this race, but TCSBRK and TCSBRKP should still be aborted to avoid calling back into the driver after a user-controlled timeout (possibly even after the tty has been reopened). Note that drivers should disable any break state on shutdown so just return on hangup (calling break_ctl() again is racy and will most likely fail for drivers handling the race).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98751
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98751
Debian:14linux7.2.10-1DEBIAN-CVE-2026-98751
Debian:12linux-6.126.12.113-1~deb12u1DEBIAN-CVE-2026-98751
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98751
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98751
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98751
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98751

Affected products (as reported)

VendorProductVersions
Linux Linux f34d7a5b7010b82fe97da95496b9971435530062 – before 70fa2bec352d9f949b882af3c380b916e4a29a43f34d7a5b7010b82fe97da95496b9971435530062 – before 8224d25534580d07925607bbd617daf9c8de26c3f34d7a5b7010b82fe97da95496b9971435530062 – before 8a0f0f9ef41cb80de4d5da4ae146df3075463f6bf34d7a5b7010b82fe97da95496b9971435530062 – before 6c9c9367351a461d62e5c0a39bffdcfbb40f068bf34d7a5b7010b82fe97da95496b9971435530062 – before 3bc82999fb85cecc7eb6ec1755ee7d698aa1e783f34d7a5b7010b82fe97da95496b9971435530062 – before 94af6cd832e9b4ce39a8fb59144a8f09ab56fd35f34d7a5b7010b82fe97da95496b9971435530062 – before c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6f34d7a5b7010b82fe97da95496b9971435530062 – before 845a2737e0f5ffe5ca8d38de556012b0c9472cdd
Linux Linux 2.6.26

References